Aon logo with the word AON in red geometric uppercase letters.
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Aon

Aon is a global professional services firm providing risk, retirement and health solutions, headquartered in London, United Kingdom. Its name and red wordmark debuted in 1987, with an evolved visual identity unveiled in September 2021.

Aon is a global professional services firm providing risk, retirement and health solutions, with its headquarters in London, United Kingdom. The company’s visual identity has centered on a red wordmark since the Aon name was adopted in 1987, with the most recent evolution unveiled in September 2021.

Design and History

The Aon name and logo debuted in 1987, when the company, then known as Combined Insurance Corporation of America, adopted the Gaelic word “aon,” which signifies “oneness, unity and coming together.” The logo was unveiled at the company’s annual meeting on April 23, 1987, in a dramatic presentation where odd shapes on a large screen transformed into the letters A-O-N. Company leadership noted at the time that the logo would not feature a shamrock or the color green, despite the Gaelic origin of the name. [1] [2]

The original 1987 mark consisted of the stylized letters “AON” in red, as documented in a U.S. trademark registration filed by Aon Corporation on May 19, 1987. The trademark description specifies “the stylized letters ‘AON’ in red.” [3] [4]

In 2010, Aon’s logo appeared on the front of Manchester United’s home kit as part of a four-year shirt sponsorship, marking one of the most visible uses of the brand. The sponsorship was described by Aon’s CEO as “an important amplifier of our Aon United vision.” [5]

In September 2021, Aon unveiled an evolved visual identity alongside a new brand purpose and proposition. The company announced it was “bringing to life our evolved visual identity” at the Ryder Cup, which ran through September 26, 2021, at Whistling Straits in Kohler, Wisconsin. The rebrand accompanied Aon’s repositioning as a firm “in the business of better decisions.” [6]

The 2021 brand refresh was discussed by Aon’s Global Head of Brand, Stuart Green, and Chief Culture Officer, Kelli Clark, in an October 2021 podcast episode focused on the company’s purpose, proposition and values. [7]

Meaning and Symbolism

The name “Aon” derives from the Gaelic word meaning “oneness, unity and coming together,” as explained by company leadership when the name was adopted in 1987. [2]

The current logo is a red wordmark. Brand asset databases list Aon’s primary brand red as hex code #EB0017. [8]

Typography and Design

The current Aon wordmark uses uppercase, bold, sans-serif letterforms. A U.S. trademark registration for the mark describes it simply as “stylized letters AON.” [9] No official documentation identifying the specific typeface used in the current or historical Aon logo has been published by the company.

Logo Index is an independent educational archive covering logos, visual identities and graphic design history. All trademarks and brand assets remain the property of their respective owners.

Logo data

Measured from the original SVG file on 30/09/2026.

Colors

Single color.

  • #EB0017Red, 100%

    RGB 235, 0, 23; CMYK 0, 100, 90, 8

    White text 4.6:1 (passes AA)

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Backgrounds and sizes

Contrast and color difference

Compared with Banking and Finance

544 measured Banking and Finance logos

Only 8% of Banking and Finance logos in the archive use red as the main color.

  • Main color red8%
  • Wordmark31%
  • Single color42%
  • Most common main color here: blue36%

From measured files, not tags. Updated 29/10/2026.

Structure

Logo type
WordmarkClassified by AI
Proportions
2.7 : 1Horizontal
Ink coverage
48%52% empty space inside the outline
Symmetry
Asymmetric37% left-right match
Outline
Free-formOverall silhouette
Complexity
Moderate4 shapes, about 153 points

Tints and shades

Click a step to copy

#EB0017

Typography

Lettering style: Geometric sans, uppercase.

This is a style class, not the exact font. The font has not been documented.

Free fonts in this style: Montserrat, Outfit, Urbanist

Visual description

Classified by AI

Style
Geometric, minimal, corporate
Layout
Lettering on its own
Techniques
Geometric construction, wordplay
Text in the logo
AON

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